Posted by Willy-N on Thursday, December 29, 2005 at 4:21PM :
In Reply to: Re: 46' 1 1/2 ton w/ factory air brakes by me. posted by Tom Petroff on Thursday, December 29, 2005 at 4:05PM :
The first truck brakes were brake shoes operating directly on the wheels. From this simple beginning has evolved one of the most complex braking systems found on any type of vehicle. The first air brakes were introduced in 1918. Seven years later four-wheel brakes were introduced on trucks, and the internally-expanding type was introduced by 1930. In the late 1930s the vacuum booster, or hydraulic brake, was introduced. Mark H.
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